Backpack



FIG. 1 is a front view of a backpack of our design with flaps closed;

FIG. 2 is a left side view of the backpack of FIG. 1;

FIG. 3 is a right side view of the backpack of FIG. 1;

FIG. 4 is a back view of the backpack of FIG. 1;

FIG. 5 is a top view of the backpack of FIG. 1; and,

FIG. 6 is a front view of the backpack of FIG. 1 with the flaps in anopen configuration.

The bottom of the backpack does not form a part of this design.

The broken lines shown in the drawings are included for the purpose ofillustrating environmental structures and form no part of the claimeddesign.

The ornamental design for a backpack, as shown and described.